This is the cbs evening news with scott pelley. Reporting tonight from washington. Pelley good evening. The tension in the st. Louis area is rising as a state grand jury gets closer to a decision on whether to indict Ferguson Police officer Darren Wilson in the Fatal Shooting of michael brown. Today the governor declared a state of emergency and authorized the National Guard to help keep the peace when that decision comes in. Dean reynolds is at the courthouse in clayton, missouri. Hands up. Dont shoot. Reporter in 25degree weather, protesters marched near the st. Louis county courthouse today, where grand juries will soon make their decision known. 21 days and still no justice. Deray mckesson is a protest organizer. Were helping people learn how to peacefully protest and disrupt systems and daily life here in st. Louis as we get closer to the indictment decision, and we want to bring that disruption back to the people, back to the system that caused this pain for the community. Reporter the protesters say when the grand jury decision is handed up, they will be better organized, but the police will be, too, and now augmented by National Guard troops. Charles davis owns a ferguson restaurant on the street where past protests have turned violent. Do you think theres a chance that calls for calm will prevail . I pray that it does, you know. I cant tell you the mind of other people. I can only speak of the mind of my own, but i pray that it does. Reporter new video may further inflame passions here. It shows an apparently uninjured officer Darren Wilson at the Police Station after he shot and killed michael brown. That runs counter to the police contention that wilsons eye socket had been fractured in the altercation with brown. Ben crump represents browns family. If you got a blowout, a fracture to your eye socket, youre not just going to be Walking Around not holding your eye. Reporter new police radio tapes include officer wilson calling for assistance minutes before the shooting august 9th. After the shooting, another call from a different officer comes through. Get us several more units over here. Theres going to be a problem. Reporter police here say they have undergone thousands of hours of additional training and have reached out to build strong relationships with the community. Scott, we will soon see if that effort is successful. Pelley dean, thanks very much. Dean mentioned the 25degree temperature in missouri today. For the second time in two weeks, a mass of arctic air is sending temperatures plunging. Freeze warnings are up across the south from texas to georgia. And that sea of blue and purple is where temperatures will be well below freezing tonight, including 15 in kalamazoo, michigan, and minus 7 in aber aberdeen, south dakota. In the florida panhandle, the temperature will fall to 29. It will be 24 in dallas. And with the cold has come snow in some places. Heres vicente arenas. Reporter steady, heavy snow started falling by midday in cal kalamazoo, michigan. Brian anderson huddled in the bus shelter where hes planning to spend the night. So what do you do now . Take it one day at a time and try to survive. Do you bring a few extra blankets with you . I got one im sitting on and thats about it. Reporter traffic crawled just outside the city where snow and blowing winds caused nearly whiteout conditions. In indianapolis, the morning rush turn entered a morning crush as up to a dozen cars slid off interstate 74. Traffic chopper pilot keith mccutchen. Slow the heck down, people. They need to get cops out here quick. There goes at one. Boom. Reporter as daylight broke, police finally shut down the eastbound lanes, but the traffic jam extended for miles. Even texas got some snow. Well, the panhandle needed shovel, in midlothian, there was barely enough for a snowball. Schools in arkansas canceled classes and kentucky saw up to five inches of snow. Here in kalamazoo, as much as a foot of snow is expected by tomorrow night, and there is snow in the forecast every day this week. And get this, scott, there is already ice forming on lake superior. Thats something that usually doesnt happen until december. Pelley not even winter yet. Vicente arenas reporting tonight. Thank you, vicente. Here in washington, the state departments unclassified email system is still shut down tonight after it became the latest victim of hackers targeting the u. S. Government. Heres Homeland Security correspondent bob orr. Reporter the f. B. I. Is now investigating at least four Cyber Attacks that have infiltrated key Government Systems over the past several weeks. Sources say chinese hackers targeted National Weather service computers, and the personal data of 800,000 u. S. Postal workers. Around the same time, cyberspies thoughts to be from russia hit unclassified email networks at the white house and the u. S. State department. Officials say there is no evidence any classified information was compromised. Shawn henry, who led the f. B. I. Cyberdivision and who now runs the security form crowd strike, says the breakins appear to be spy operations. This is most likely an intelligence collection operation. Theyre looking to gather intelligence about who the players are within government, who theyre communicating with, et cetera, and the new initiatives theyre developing. Reporter henry said the recent rash of breaches might indicate that u. S. Businesses and agencies are Getting Better at detecting intrusions. Why cant we stop this from happening . I think best way to get this is to manage it, to be able to detect it quickly, mitigate it, not unlike how we treat major diseases. We arent going to eradicate them, but we have to detect them and respond and mitigate outcomes. So youre saying we cant stop all of these . I dont think we can, absolutely not. Reporter billions have been spent to protect computer system, but there is no failsafe Network Beyond the reach of highly motivated thieves. Pelley bob orr, thank you very much. The surgeon flown from west africa to a special treatmenter in . Nebraska died of ebola this morning. Dr. Martin salia caught the virus in sierra leone. He was born there but he lived in maryland. Salia arrived in Critical Condition on saturday. Hes the second ebola patient to die in the united states, both caught the virus in africa. Today in indianapolis, the parents of an aide worker executed yesterday by isis asked americans to pray for other captives. Peter kassig converted to islam in captivity and changed his name to abdulrahman. He is the third american to be killed by isis, which has seized large portions of iraq and syria. We have more now from Margaret Brennan. Reporter after more than a year of waiting and praying, ed and paula kassigs worst fears were confirmed. Isis murdered their only child. Our hearts are battered, but they will mend. The world is broken, but it will be healed in the end. Reporter the killing was made public in a video released by isis on sunday, a masked execution stands over the severed head of man he identified as peter kassig. I peter edward kassig, a u. S. Citizen of your country. Reporter the 26yearold indiana native, a former army rangerturned aide worker, was captured last year while delivering supplies in eastern syria. Unlike previous isis execution videos, kassig did not address the camera and his captor is not in the same desolate desert location. This time he says hes in dabiq, northern syria. The britishact sengtded executioner appears to be the same one who held american journalists james foley and steven sotloff. He again issued a threat to president obama. And tomorrow we will slaughter more soldiers. Reporter the 15minutelong video also includes a gruesome mass beheading of 18 syrian soldiers. In a show of defiance, one of their executioners were masked. In a letter to his parents earlier this year, peter kassig wrote that if he did die, it was for a good cause. Ed kassig said a new phase of their ordeal is now beginning. Please allow our small family the time and privacy to mourn, cry and, yes, forgive and begin to heal. Reporter as for isis, it is still believed to hold other hostages, including a female american aid worker. But, scott, unlike in other videos, this time their identities were not revealed. Pelley Margaret Brennan at the statehouse. Margaret, thank you. The u. S. Military said that Coalition Forces conducted more than 30 air striengs against isis since friday. That coalition includes saudi arabia. The saudis are desperate to keep the mayhem in iraq from invading their kingdom. Its rare for a reporter to get into saudi arabia, but Holly Williams has an extraordinary look now at how theyre defending themselves. Reporter we flew over the Arabian Desert to see the new 600milelong border fence thats protecting saudi arabia from isis. On the other side is the chaos of iraq, where isis is waging a brutal war. The saudis are using radar and infrared cameras to make sure it doesnt spill across the frontier. This is an impressive border fence, but it may not be enough to keep isis out of saudi arabia, because hundreds of young saudi men are fighting with isis in iraq and syria. Young saudis like this man, who appeared in an isis propaganda video preparing to become a suicide bomber. And then executing his plan. In a country with a long history of islamic terrorism, we were given rare access by the Saudi Arabian authorities. Their fear is that like al qaeda before it, isis will radicalize saudis who then target their own government. Saudi officials took us to this maximum security prison where they hold convicted terrorists. Some come back in from syria, some from iraq. Reporter and saudi arabias special forces showed us their ability to repel terrorist attacks. Including plane hijackings and villages infiltrated by violent extremists. Dozens of saudis have blown themselves up in isis suicide bombs. They will come up with new tools and new ways, but we try to counter that as much as possible. Reporter with the explosives rigged up at a safe distance, lieenant colonel husam al shethry showed us the devastation they cause. But that would be here. Yes. Reporter and i would have been dead. Absolutely. It is more organized, and therefore its more dangerous. Reporter general Mansour Al Turki told us isis is a bigger threat than al qaeda ever was. They have their ambitions to have a larger area under their control. Reporter including saudi arabia . Including saudi arabia, of course. Reporter the Saudi Arabian authorities have cracked down on mosques and muslim clerics that were radicalizing young men, but that hasnt stopped hundreds of saudis from joining isis. Saudi officials told us that recruitment has moved online and, scott, they claim theyre sometimes powerless to stop it. Pelley Holly Williams reporting from the kingdom for us tonight. Holly, thanks very much. New findings tonight could change what doctors prescribe to prevent heart attacks. And the pope makes an announcement that will be of interest to millions of americans. When the cbs evening news continues. We miss out on the things that matter today. At axa, we offer advice and help you break down your insurance goals into small, manageable steps. Because when you plan for tomorrow, it helps you live for today. Can we help you take a small step . For advice, retirement, and life insurance, connect with axa. Doctors have been for advprescribingdecade, and life insurance, nexium to patients just like you. For many, prescription nexium helps heal acidrelated erosions in the lining of the esophagus. There is risk of bone fracture and low magnesium levels. Side effects may include headache, abdominal pain, and diarrhea. If you have persistent diarrhea, contact your doctor right away. Other serious stomach conditions may exist. Avoid if you take clopidogrel. Nexium 40 mg is only available by prescription. Talk to your doctor. For free home delivery, enroll in nexium direct today. A, goodnight. Goodnight. For those kept awake by pain. The night is anything but good. Introducing new aleve pm. The first to combine a safe sleep aid. Plus the 12 hour strength of aleve. For pain relief that can last until the am. Now you can have a good night and a. Good morning new aleve pm. For a better am. I wish. Please, please, please, please, please. [ male announcer ] the wish we wish above all. Is health. So we quit selling cigarettes in our cvs pharmacies. Expanded minuteclinic, for walkin medical care. And created programs that encourage people to take their medications regularly. Introducing cvs health. A new purpose. A new promise. To help all those wishes come true. Cvs health. Because health is everything. Pelley tonight there is an Important Development in the fight against heart disease. We know that lowering cholesterol helps, but how low should it go . Heres dr. Jon lapook. Reporter todays study may change the way doctors treat patients with heart attacks or severe chest pain. Dr. Chris cannon of brigham and Womens Hospital presented the findings at a meeting of the american heart association. We see benefits of taking cholesterol levels that are low to very low in the postheart attack patients. Reporter more than 18,000 patients who had either heart attack or chest pain were treated. Half received a highdose statin, and half received vytorin, which combines a statin with another drug that decreases cholesterol absorption. Statin alone lowered the bad cholesterol or ldl to an average of 69. Vytorin dropped it to an average of 54. After seven years the vytorin group had 6. 4 fewer cardiovascular events such as death, heart attack and stroke. We found we could prevent two heart attacks or strokes for every 100 patients treated. Reporter one year ago new cardiology guidelines suggested doctors stop targeting specific levels because there was no evidence one ldl level was better than other. Can steve nissen believes those recommendations need to be changed immediately. This study really blows up those guidelines. The guidelines didnt have target levels for ldl cholesterol. Many of us thought that was wrong, now within an year of issuing the guidelines, we know that thats wrong. Reporter the study is sponsored by the company that makes vytorin. What needs more research, scott, is whether lowering cholesterol levels with other drugs would be just as effective. In this case, two drugs were better than one, but a single, more powerful medication may do just as well. Pelley dr. Jon lapook. Thank you, doctor. Who just landed the biggest deal ever in American Sports . Well have the answer ahead. It can be hard to get air out, which can make it hard to get air in. So i talked to my doctor. She said. Doctor symbicort could help you breathe better, starting within 5 minutes. Symbicort doesnt replace a rescue inhaler for sudden symptoms. Symbicort helps provide significant improvement of your lung function. Symbicort is for copd, including chronic bronchitis and emphysema. It should not be taken more than twice a day. Symbicort contains formoterol. Medicines like formoterol increase the risk of death from asthma problems. Symbicort may increase your risk of lung infections, osteoporosis, and some eye problems. You should tell your doctor if you have a heart condition or high Blood Pressure before taking it. Grandfather symbicort could mean a day with better breathing. Watch out, piggies child giggles doctor symbicort. Breathe better starting within 5 minutes. Call or go online to learn more about a free prescription offer. If you cant afford your medication, astrazeneca may be able to help. Ugh. Heartburn. Did someone say burn . Try alka seltzer reliefchews. They work just as fast and are proven to taste better than tums smoothies assorted fruit. Mmm. Amazing. Yeah, i get that a lot. Alka seltzer heartburn reliefchews. Enjoy the relief. And cialis for daily use helps you be Ready Anytime the moment is right. Cialis is also the only daily ed tablet approved to treat symptoms of bph, like needing to go frequently. Tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. Do not take cialis if you take nitrates for chest pain, as it may cause an unsafe drop in Blood Pressure. Do not drink alcohol in excess. Side effects may include headache, upset stomach, delayed backache or muscle ache. To avoid long term injury, get medical help right away for an erection lasting more than four hours. If you have any sudden decrease or loss in hearing or vision, or any allergic reactions like rash, hives, swelling of the lips, tongue or throat, or difficulty breathing or swallowing, stop taking cialis and get medical help right away. Ask your doctor about cialis for daily use and a free 30tablet trial. Ask your doctor about cialis for daily use make us stronger. When a girl connects with a science mentor. Her confidence grows. When schools connect with technology. A 5th graders world opens up. And when a worker connects to online degrees. His opportunities multiply. The at t aspire initiative. Helping students and communities across america. Pelley the pope is coming to the united states. Pope francis confirmed today that hell travel to philadelphia next september for an International Conference on the family. His first u. S. Visit is also expected to include a stop here in washington. The president and congress have invited him, and theres likely to be an address to the u. N. In new york. Again, that is next september. The biggest American Sports contract in history was settled today between the Miami Marlins and slugger giancarlo stanton. 13 years, 325 million. 325. Weve worked it out. Thats about 25 million a season or about half the teams 2014 payroll. Now, assuming stanton plays a full season, thats more than 154,000 a game or 38,000 for each atbat. You probably noticed the scaffolding on the dome of the capitol. Heres what it lked like when it went up over the last few s. Week part of the thorough repair of the civil warera structure. The dome is made of cast iron and its riddled with cracks. Small pieces have even fallen off. Stephen ayers, the architect of the capitol, told us this week the exterior repairs and painting will be finished next fall. Also at the capitol today, they planted a living memorial to a boy whose murder changed america. His story is next. When i didnt think twice about where i left my razor. [ male announcer ] hep c is a serious disease. Take action now. Go to hepc. Com or call 1844444hepc to find out how you and your doctor can take the next step towards a cure. Because the answers you need, may be closer than they appear. Because the answers you need, may be closer than they appear. Dad,thank you mom for said this oftprotecting my future. You. Thank you for being my hero and my dad. Military families are uniquely thankful for many things, the legacy of usaa Auto Insurance could be one of them. If youre a current or former military member or their family, get an Auto Insurance quote and see why 92 of our members plan to stay for life. This is a map of the pressure points on my feet. I have flat feet. I learned where the stress was at the dr. Scholls foot mapping center. Then i got my number, which matched the custom fit orthotic inserts with the right support. Go to drscholls. Com for locations and save 10 im a believer. Mheres our new trainer ensure active heart health. Heart im going to focus on the heart. I minimize my sodium and fat. Gotta keep it lean and mean. Pear uhoh. Heart i maximize good stuff like my potassium. And phytosterols, which may help lower cholesterol. Major im feeling energized already. Avo new delicious ensure active heart Health Supports your heart and body, so you stay active and strong. Ensure. Take life in. Pelley the Capitol Building sits on a 59acre park that includes hundreds of trees. The newest, a sycamore, was planted just today. In memory of a black teener whose murder nearly 60 years ago helped spark the civil rights movement. Elaine quijano has the story of emit hill and the lives he touches today. It was the end of my innocence as a child. Reporter for journalist and play right Janet Langhart cohen, the year 1955 changed her life. That august we got word up from mississippi that a 14yrold black boy, same age as i, was brutally murdered for whistling at a white woman. Reporter his name was emmett till. On august 28, 1955, the chicago teen was taken by a group of white men from his great uncles home while visiting money, mississippi. His shot and battered body was found three days later in a nearby river. Two white men were acquitted. At tills funeral, his mother mamie proclaimed, let the world see what they did to my boy. 50,000 people filed by his open casket. What goes through your mind when you see that . It doesnt go through my mind. It goes through my heart. It breaks my heart to look at it because. I think of his mother. Reporter mamie till spoke of her son before her death in 2003. I saw a hole, which i presumed was a bullet hole, and i could look through that hole and see daylight on the other side. And i wondered, was it necessary to shoot him . Reporter documentary filmmaker Stanley Nelson says tills murder served as a catalyst for supporters of civil rights. All those people who were about his age, who were about 14 in 1955, then became the kind of front ranks of the civil rights movement. Reporter Langhart Cohen wrote a play about emmett till and for years has joined other civil rights leaders and lawmakers in trying to memorialize him on capitol hill. Out of this bitterness, this bitter fruit of our history can come these beautiful things that we can do. Make a difference, speak up. Reporter Langhart Cohen hopes this Young AmericanSycamore Tree will keep tills memory alive. Elaine quijano, cbs news, new york. Pelley and thats the cbs evening news for tonight. With thanks to the Jones Day Law Firm for this view of the capitol and for all of us at cbs news all around the world, good night. Captioning sponsored by cbs mourners gather here to remember ebola victim, martin salia. The family he leaves behind here in maryland. The Drug Enforcement agency investigating whether nfl teams are applying the players with narcotic painkillers. Im bruce leshan at fedex field. After tonights cold, you may be wishing it was the dreary weather of today. Im Debra Alfarone asking people, how about that weather . Were not going to track showers anymore. No, were going to track strong winds. Tomorrow, well talk about what that means for the windchill and how long it will stay cold. The rain moved out. The bitter cold air moving in. Good evening, im jan jeffcoat. Todays rain could turn into ice overnight. Lets check in with our chief meteorologist who says its beginning to look a lot like january. Dealing with intensely cold temperatures. It really is. If it were january, we would be saying it is cold air, let alone november standards. Thankfully its dropping slowly. The roads will have time to evaporate before they become frozen. We are okay in terms of black ice. Temperatures, well above freezing. 51 downtown. Mainly in the 40s. 46 in college park. And 45 in rockville. Several hours before we have to worry about frozen temperatures. By 9 00, its above freezing on the future cast. 39 manassas. 37 in leesburg. And gaithersburg and 42 downtown. Even by 10 00, want to walk the dog, were still above freezing. Temperatures upper 30s in manassas. Mid 30s north and west and around 40 inside the beltway. By 11 00, everybody goes into the 30s. Notice we are still above freezing. So, its going to get cold slowly, which is some consolation. Fresh arctic